Answer:
Following are the response to the given question:
Explanation:
The number of shells
n = 4
Calculating the spectral line:
B.
The cynobacteria were already there without the oxygen, so that rules out A, and a lot of prokaryotes were anaerobic, so that rules out C. Finally, Photosynthesis does not require oxygen. Instead, Oxygen is a waste product of it. Therefore, it cannot be D. So, we are only left with B
Hoped this helped :D
Answer:
"The total pressure in a mixture of gases is equal to the sum of partial pressures of each gas"
Explanation:
Dalton's law of partial pressures state that, in a mixture of gases, the total pressure is equal to the sum of the partial pressure exerted by each gas of the mixture. The equation is:
Total pressure = Partial pressure Gas 1 + Partial pressure Gas 2 + .... + Partial pressure Gas n
To complete the sentence we can say:
"The total pressure in a mixture of gases is equal to the sum of partial pressures of each gas"
Answer:
486 nm
Explanation:
From the question given above, the following data were obtained:
Energy (E) = 4.09×10¯¹⁹ J
Wavelength (λ) =?
Next, we shall determine the frequency of the photon. This can be obtained as follow:
Energy (E) = 4.09×10¯¹⁹ J
Planck's constant (h) = 6.63×10¯³⁴ Js
Frequency (f) =?
E = hf
4.09×10¯¹⁹ = 6.63×10¯³⁴ × f
Divide both side by 6.63×10¯³⁴
f = 4.09×10¯¹⁹ / 6.63×10¯³⁴
f = 6.17×10¹⁴ Hz
Next, we shall determine the wavelength of the photon. This can be obtained as follow:
Frequency (f) = 6.17×10¹⁴ Hz
Velocity of photon (v) = 3×10⁸ m/s
Wavelength (λ) =?
v = λf
3×10⁸ = λ × 6.17×10¹⁴
Divide both side by 6.17×10¹⁴
λ = 3×10⁸ / 6.17×10¹⁴
λ = 4.86×10¯⁷ m
Finally, we shall convert 4.86×10¯⁷ m to nm. This can be obtained as follow:
1 m = 1×10⁹ nm
Therefore,
4.86×10¯⁷ m = 4.86×10¯⁷ m × 1×10⁹ nm / 1 m
4.86×10¯⁷ m = 486 nm
Therefore, the wavelength of the photon is 486 nm
Answer:
Mass is both a property of a physical body and a measure of its resistance to acceleration when a net force is applied. An object's mass also determines the strength of its gravitational attraction to other bodies. The basic SI unit of mass is the kilogram.
Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another. On Earth, gravity gives weight to physical objects, and the Moon's gravity causes the ocean tides.
When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.
Gravitational energy or gravitational potential energy is the potential energy a massive object has in relation to another massive object due to gravity. It is the potential energy associated with the gravitational field, which is released when the objects fall towards each other.
In science and engineering, the weight of an object is the force acting on the object due to gravity. Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar quantity, the magnitude of the gravitational force
Newton's law of universal gravitation is usually stated as that every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
Explanation:
